1970s Disco Maxi Dress

True unique vintage 1970s maxi shirtdress with wide lapel. Polyester (I think?) fabric with vibrant Asian garden/landscape print. No size or brand tags, and the stitching inside makes me think it's handmade. Faux jewel buttons down the front and at cuffs. Long, full, A-line skirt. No flaws or fading seen. Measurements in pictures. I think that it would best fit a medium, maybe a small. Style tags: psychedelic, hippie, hippy, disco, boho, shirtdress